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223242373 is a prime number
BaseRepresentation
bin11010100111001…
…10100010000101
3120120001212222001
431103212202011
5424122223443
634052505301
75350346254
oct1523464205
9516055861
10223242373
11105018332
126291b231
13373344a3
142191279b
15148ead4d
hexd4e6885

223242373 has 2 divisors, whose sum is σ = 223242374. Its totient is φ = 223242372.

The previous prime is 223242337. The next prime is 223242391. The reversal of 223242373 is 373242322.

Together with previous prime (223242337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204432804 + 18809569 = 14298^2 + 4337^2 .

It is a cyclic number.

It is not a de Polignac number, because 223242373 - 213 = 223234181 is a prime.

It is a super-3 number, since 3×2232423733 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is equal to p12291409 and since 223242373 and 12291409 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223242473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111621186 + 111621187.

It is an arithmetic number, because the mean of its divisors is an integer number (111621187).

Almost surely, 2223242373 is an apocalyptic number.

It is an amenable number.

223242373 is a deficient number, since it is larger than the sum of its proper divisors (1).

223242373 is an equidigital number, since it uses as much as digits as its factorization.

223242373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 28.

The square root of 223242373 is about 14941.2975674805. The cubic root of 223242373 is about 606.6323180582.

Adding to 223242373 its reverse (373242322), we get a palindrome (596484695).

The spelling of 223242373 in words is "two hundred twenty-three million, two hundred forty-two thousand, three hundred seventy-three".